Process and system for guiding and submerging a pump aggregate in a tank fluid in a tank

In combination,

• a tanker having at least one hatch for receiving liquid cargo under pressure;
• a hatch cover removably mounted over said hatch and a valve in said hatch cover in selective communication with said hatch;
• a mobile housing member having an open bottom disposed over said hatch in sealed relation thereto and in spaced relation about said hatch cover;
• externally operated means within said housing member for opening said valve in said hatch cover to communicate said hatch with the interior of said housing member;
• externally operated lifting means within said housing member for raising said hatch cover from said hatch;
• a pump aggregate disposed within said housing member;
• and
• a hoisting winch disposed within said housing member for lowering said pump aggregate into said hatch with said hatch cover in a raised position.

A process for guiding and submerging a pump aggregate in a fluid in a tank, said process comprising the steps of

• suspending a pump aggregate from and within a support means, said pump aggregate including a pump, a drive motor connected to the pump, a hose stump connected to the pump and disposed in folded manner in said support means, and a set of hydraulic conduits connected between said drive motor and said support means;
• positioning the support means in gas-sealed and pressure tight relation outside and concentrically about a hatch opening;
• and
• winching the suspended pump aggregate downwardly through the hatch opening from within the support means while maintaining the pump aggregate in gas-sealed and pressure tight relation within the support means.

A system for guiding and submerging a pump aggregate in a fluid in a tank, said system comprising

• a support means for positioning outside and concentrically about a hatch opening in gas-sealed and pressure tight relation;
• a pump aggregate including a pump, a drive motor for said pump, a hose stump connected to and between said support means and said pump and a set of hydraulic conduits connected to and between said drive motor and said support means;
• and
• a hoisting winch within said support means for moving said pump aggregate into and through the hatch opening.